I don’t know anything about roofing, but curiousmay9 sent me pics of the leaky bit of the Castle’s roof, which she and runbunny and shadowkatt are presumably working on now. While waiting for my PDA to sync, I decided to inflict them upon you.
curiousmay9 did try to tell me what was wrong with the design that led to the leak, but my mind sorta wandered away in non-comprehension.
Otherwise—I have no idea who drew this, or who it represents. Any clues?